Improvement in bung-cutting machines



W. L. STANDISH.'

Bung- Cutting Machines.`

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UNITED STATES PATENT QFFICE..

WILLIAM L. STANDISH, OF PITTSBURG, PENNSYLVANIA.

IMPROVEMENT IN BUNG-CUTTING MACHlNES.

Specification forming part of Letters Patent No. 149,164, dated March 31, 1874; applfcaton lled Maren 3, 1874.

T0 all whom it may concern:

Be it known that I, WILLIAM L. STANDISH, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Bun g-Cutting Machines; andI do hereby declare the following to be a full, clear, and exact description thereof, reference being had to the acompanying drawing, forming a part of this specification, in which- Figure l is a plan view of my improved machine. Fig. 2 is a side elevation; and Fig. 3 is a detached view of the box.

My invention lconsists of certain improvements in the feeding apparatus and cuttingbox of machines for cutting bungs.

To-enable others skilled in the art to make and use my improvement, I will describe its construction and manner of use.

The machine, in its general character, is much the same as that patented to lne July 23,1867. It has a frame, a, for supporting the operative parts. The cutter b, which is made hollow and with a serrated cutting-ed ge, consisting of two points extending forward to cut the bung by' a continuous advancing cut, is mounted in a cutter-frame, b1, to which it is secured by a set-screw, b2. The cutter-head b1 is mounted on a slide, o, which has a reciproeating motion communicated to it by the crank (l, shaft d1, and iiy-wheel cl2. A rod, e, extends through the hollow cutter from the block el, to which it is attached. The function of this rod is to force the bung out of the cutter. In front of the cutter is the box, into which the strip of wood is fed. In the rear of the box thereis a stationary die, f. The inside of the hollow cutter b tapers from the point backward, so that when the bung has been cut, and is forced into the hollow cutter by the stationary die j', it is compressed in the tapered center of the cutterto give it the proper taper. The retraction of the cutter causes the bung to be forced out by the rod e. Arranged at the end of the box g is the feed apparatus, and in front of the feed apparatus mounted on a vibrating frame is the saw o, by which the Y. strip is cut into suitable blanks prior to being fed into the box'in front of the cutter. The saw is caused to advance with the slide to cut the blanks from" the bar during the time the latter is held stationary. rllhese devices, except the feed apparatus and box, are old, being embodied in the patent above referred to. The feed apparatus consists of a slide., h, moving in a frame, i. Pivoted to the front end of the slide is a clamping-arm, k. At the forward end'this arm is connected to the bent lever k2 by the link k1, and the lever k2 is pivoted at its opposite end to the arm 7c3, which is rigidly attached to the upper end of the shaft l. The shaft l is round at its upper end and square at its lower end, as indicated at Zi' and l2. Upon the round portion is pivoted the forward end of t-he lever m, which at its rear end is connected by the lever m1 to the slide c. On the lower or square end of the lshaft l is a sliding' sleeve, a. The adjacent faces of the lever m and the sleeve u are provided with a clutch, al. The sleeve u is raised or lowered on the shaft by the pivoted lever p. When not attached to the sleeve n, by means ofthe clutch al, the lever m turns freely on the round shaft Z1 without moving it 5 but when the sleeve is raised, and secured to the lever m by the clutch al, the vibration of the lever m causes the vibra tion of the sleeve` n, which, being mounted 011 the square end of the shaft Z, causes the latter to be turned also. This vibrates the arm k3, which, by means of the lever k2 and a link, k1, moves the slide h forward and back upon the frame 17, and opens and closes the clampingarm L, by which the board or strip is held. During the advance or feed of the slide h the board, being inserted between the arm 7c and the slide h, is grasped between them and carried forward into the path of the saw o, where it is seized by a clamp, q, and held while being operated upon by the saw. The block or blank which is cut off remains in the box after the clamp q and saw o have been retracted, and the further feeding forward of the bar causes it to be pushed in front of the cutter. The pressure-screw u operates upon an elastic rubber set in the side of the slide h, pressing it against the frame i to draw the clamp 7c firmly against the strip, and-to prevent the slide being shot forward beyond the movement of the levers.' rlhe screw s projecting through the forward arm of the lever k2 against the side of the slide, is to regulate the throw of the clamp k to give a longer or shorter feed. The longer the throw of the clamp the longer it is closing on the strip7 and the shorter is its forward motion, and vice versa. The screw t is a stop to prevent the slide from receding too far. The slide 7L is forced back by the spring c mounted on the rod c ,v the clamp la opening to allow the board to lie stationary, and to secure a new hold farther back. The clamp q is pivoted on the side of the machine, and is caused to be advanced and retracted by means of a rod, 1', which extends forward, and is attached to the pivoted arm r1, which arm is moved by the rod r2 attached to the pivoted arm r3, which, at its upper end, carries a wheel, r4. This vwheel is caused to bear upon the cam-wheel w by the spring i, which presses against the arm r1. The eccentricity of the cam w retracts the clamp q during the forward mo tion of the slide 7L, aft-er which it is thrown forward by the spring r during the passage of the plain side of the cam. The box g is provided with a lower side, m, adjustable by means of the slots a. and screws x2. The upper side mi is adjustable by means of the screw x4, and` is provided with a spring, 005, mounted on the screw w, for giving it a steady yielding' pressure, to provide for any irregularity in the block. The box has an opening, g1, through which projects the die f. The opening g1 is large enough to admit of the passage of the end of the cutter b. For the purpose of centering the blank, the box has a yielding raised bottom, g2, which brings the blank directly in front of the edgev of the cutter. This enables me to make the strip but little wider than the bung to be made.

This compresses the block when it passes over it, and when withdrawn the block springs back to center the next blank. To suit the box for bungs of different sizes it is provided with an opening for the insertion of liners or plates g3, which are slipped down back ofthe sides w.

This box is adjusted to the w'idthof the blank by the screws and slots mi and x2, and to its thickness by the liners inserted behind the sides. These liners are, of course, provided with holes corresponding to the hole g1, for the passage of the cutten The feed apparatus herein described is peculiarly adapted to secure the perfect feeding of the blank into this machine. The board from which the blanks are cut must be held stationary in the feeding-slide, and clamped at its forward end during the operation of sawing oft' the blank, while the automatic and mechanical movement of the slide makes a per feet feed.

The advantages of making the box adjustable to snit the size of the bung to be cut are too evident to need comment. It obviates the necessity of inserting a separate box for each separate size.

lVhat I claim as my invention, and desire to secure by Letters Patent, is-

I. The slide 7l., provided with a clampingarm 7c, and having a limited reciprocating motion imparted to it from the cutter-slide by means of a series of interposed levers, substantially as described.

2. The clamp q, operated by means of a cam and lever extending from the power-shaft, for the purpose of clamping and holding the board while the blank is being cut therefrom.

3. The box g, having adjustable sides m and an opening for the insertion of liners, so that the same may be adjusted for cutting bungs of any desired size, substantially as described.

In testimony whereof I, the said VILLIAM L. STANDISH, have hereunto set my hand.

WILLIAM L. STANDISH. lVitncsses KEUR. WILLIAMS, A. S. MILrcF.. 

